Liquid crystal display device and method of construction

Abstract

A liquid crystal display device and method of construction, includes a first substrate and a second substrate each having a first surface, and a liquid crystal material provided between the first surfaces of the first and second substrates, and steps of forming a controlling film for controlling an alignment of liquid crystal molecules to adhere to the first surface of the first substrate; peeling the controlling film off of the first substrate; positioning the first and the second substrates with the respective first surfaces confronting each other; and providing liquid crystal material between the first and second substrates.

What is claimed is: 
     
       1. A method of making a liquid crystal display device, which includes a first substrate and a second substrate each having a first surface, and a liquid crystal material provided between said first surface of said first and second substrates, comprising the steps of: aligning liquid crystal molecules at a pretilt angle greater than 0° by adhering a controlling film to said first surface of said first substrate and   peeling said controlling film off of said first substrate;   positioning said first and said second substrates with their respective first surfaces confronting each other; and   providing liquid crystal material between said first and second substrates.   
     
     
       2. A method of making a liquid crystal display device according to claim 1, further comprising a step of: increasing said pretilt angle of said liquid crystal molecules by providing an alignment film on said first surface of said first substrate prior to adhering said controlling film.   
     
     
       3. A method of making a liquid crystal display device according to claim 1, further comprising a step of: treating said first surface of said first substrate prior to adhering said controlling film to control adhesion between said first surface of said first substrate and said controlling film.   
     
     
       4. A method of making a liquid crystal display device according to claim 2 wherein the treating step includes exposing the surface to an organosilicon compound. 
     
     
       5. A method of making a liquid crystal display device according to claim 4, wherein said organosilicon compound is selected from the group consisting of N-(β-aminoethyl-γ-aminopropyltrimethoxysilane), γ-(glycidoxypropylmethyldimethoxysilane), and octadecylethoxysilane. 
     
     
       6. A method of making a liquid crystal display device according to claim 2, wherein the increasing step includes the substep of forming said alignment film to be composed of at least one material selected from the group consisting of polyimide, precursors of polyimide, polypyrrole, and polyaniline. 
     
     
       7. A method of making a liquid crystal display device according to claim 2, wherein the aligning step includes the substep of forming said controlling film to be composed of at least one material selected from the group consisting of poly-vinyl-alcohol and poly-vinyl-acetate; and the providing an alignment film step includes the substep of forming said alignment film to be composed of at least one material selected from the group consisting of polyimide and mixtures of polyimide and precursor of polyimide. 
     
     
       8. A method of making a liquid crystal display device according to claim 2, wherein the aligning step includes the substep of: applying a controlling film material on said alignment film on said first substrate; and   heating said controlling film material, whereby said material is hardened.   
     
     
       9. A method of making a liquid crystal display device according to claim 1, further comprising a step of: treating said first surface of said first substrate prior to adhering said controlling film to control adhesion between said first surface of said first substrate and said controlling film.   
     
     
       10. A method of making a liquid crystal display device according to claim 9 wherein the treating step includes exposing the surface to an organosilicon compound. 
     
     
       11. A method of making a liquid crystal display device according to claim 10, wherein said organosilicon compound is selected from the group consisting of N-(β-aminoethyl-γ-aminopropyltrimethoxysilane), γ-(glycidoxypropylmethyldimethoxysilane), and octadecylethoxysilane. 
     
     
       12. A method of making a liquid crystal display device according to claim 1, wherein the aligning step includes the substep of forming said controlling film to be sheetlike. 
     
     
       13. A method of making a liquid crystal display device according to claim 1, wherein the aligning step includes the substep of forming said controlling film to be composed of at least one organic polymer. 
     
     
       14. A method of making a liquid crystal display device according to claim 1, wherein the aligning step includes the substep of forming said controlling film to be composed of at least one material selected from the group consisting of poly-vinyl-alcohol, poly-vinyl-acetate, derivatives of polystyrene, polyethylene, polycarbonate, and precursors of polyimide. 
     
     
       15. A method of making a liquid crystal display device according to claim 1, wherein the aligning step includes the substeps of: applying a controlling film material on said first substrate; and   heating said controlling film material, whereby said material is hardened.   
     
     
       16. A method of making a liquid crystal display device according to claim 1 wherein the peeling step includes the substep of peeling the controlling film in a constant direction.